CN214781940U - Energy-saving and environment-friendly hot air system - Google Patents
Energy-saving and environment-friendly hot air system Download PDFInfo
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- CN214781940U CN214781940U CN202120390093.9U CN202120390093U CN214781940U CN 214781940 U CN214781940 U CN 214781940U CN 202120390093 U CN202120390093 U CN 202120390093U CN 214781940 U CN214781940 U CN 214781940U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model provides an energy-concerving and environment-protective hot air system belongs to ironmaking technical field. The energy-saving environment-friendly hot air system comprises a dust removal system, a heat collection chamber of a host machine with a built-in gas transmission pipeline and an air energy water heater, a heat preservation water tank of the air energy water heater with a built-in preheating pipe, a blower connected with one end of the preheating pipe and a heat accumulating type hot air furnace with a gas inlet pipe, a cold air inlet pipe and a hot air outlet pipe, which are sequentially communicated; one end of the gas pipeline is communicated with an outlet of the dehydrator, the other end of the gas pipeline extends out of the heat collecting chamber and then is communicated with the gas inlet pipe, a main machine of the air energy water heater is connected with a heat preservation water tank of the air energy water heater, the cold air inlet pipe is communicated with the other end of the preheating pipe, and the hot air outlet pipe is connected with the blast furnace. The utility model provides an energy-concerving and environment-protective hot-air system has realized the recovery of blast furnace tail gas waste heat and has recycled, and is energy-concerving and environment-protective, and the difficult emergence of pipeline blocks up, and the safety in utilization is high.
Description
Technical Field
The utility model relates to an ironmaking technical field especially relates to an energy-concerving and environment-protective hot air system.
Background
Iron making is a process for extracting metallic iron from iron-containing minerals. At present, the blast furnace method is mainly used for iron making, and the blast furnace iron making has the advantages of good economic index, simple process, large production capacity, high labor productivity, low energy consumption and the like, and the iron produced by the method still accounts for more than 95 percent of the total iron production in the world.
During production, iron ore, coke and flux are continuously charged from the top of the furnace, hot air is blown from a tuyere at the lower part of the blast furnace, and fuel such as oil, coal or natural gas is sprayed. Iron ore, mainly iron and oxygen compounds, is charged into the blast furnace. At high temperature, the carbon in the coke and the injected material and carbon monoxide generated by the combustion of the carbon deprive oxygen in the iron ore to obtain iron. The iron ore is reduced to produce pig iron, and molten iron is discharged from a tap hole. Gangue, coke and ash content in the injected material in the iron ore are combined with fluxes such as limestone added into the furnace to generate slag, and the slag is discharged from a tap hole and a slag hole respectively. In recent years, the air problem is increasingly serious, and the attention of people and environmental protection departments is increasing on how to realize energy conservation and emission reduction and improve the utilization efficiency of energy.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides an energy-saving and environment-friendly hot air system to solve the deficiencies in the prior art. The utility model provides an energy-concerving and environment-protective hot air system has realized the recovery of blast furnace tail gas waste heat, and the heat energy of recovery is used for preheating of heat accumulation formula hot-blast furnace air inlet, and is energy-concerving and environment-protective, and blast furnace gas after the dust removal directly lets in the heat accumulation formula hot-blast furnace and recycles, has reduced the trouble that blast furnace gas restorable, and the difficult emergence of pipeline blocks up, and the safety in utilization is high.
In order to achieve the above object, the utility model provides a following technical scheme:
an energy-saving and environment-friendly hot air system is characterized by comprising a dust removal system, a heat collection chamber of a host machine with a built-in gas transmission pipeline and an air energy water heater, a heat preservation water tank of the air energy water heater with a built-in preheating pipe, a blower connected with one end of the preheating pipe and a heat accumulating type hot air furnace with a gas inlet pipe, a cold air inlet pipe and a hot air outlet pipe which are sequentially communicated;
the dust removal system comprises a gravity dust remover, a bag-type dust remover and a dehydrator which are communicated in sequence;
one end of the gas transmission pipeline is communicated with an outlet of the dehydrator, the other end of the gas transmission pipeline extends out of the heat collection chamber and then is communicated with the gas inlet pipe, a main machine of the air energy water heater is connected with a heat preservation water tank of the air energy water heater, the cold air inlet pipe is communicated with the other end of the preheating pipe, and the hot air outlet pipe is connected with the blast furnace.
Preferably, the gas transmission pipeline is spirally arranged on the inner wall of the heat collection chamber.
Preferably, the gas transmission pipeline is a stainless steel pipe, and the inner wall of the stainless steel pipe is coated with a polytetrafluoroethylene layer.
Preferably, a polyurethane layer is coated outside the gas transmission pipeline between the outlet of the dehydrator and the heat collection chamber.
Preferably, the preheating tubes are serpentine finned tubes.
Preferably, the inner wall of the heat collection chamber is provided with an insulation layer.
Preferably, the top of the heat collecting chamber is provided with a plurality of vent doors.
Preferably, a burner, a combustion chamber connected with the burner and a regenerator stacked with heat accumulating bricks are arranged in the heat accumulating type hot blast stove, the burner is provided with a gas inlet pipe, and the combustion chamber is connected with the regenerator through a heat transfer mechanism.
Preferably, the top surface and the bottom surface of the heat storage brick are of a wave structure.
Preferably, the heat collection chamber is provided with a connecting hole used for penetrating through the gas transmission pipeline, the inner wall of the connecting hole is provided with a sealing ring, the sealing ring faces the end face outside the connecting hole and is provided with an inclined face inclining towards the inside of the connecting hole, the included angle between the inclined face and the vertical face is 30 degrees, and the inner diameter of the sealing ring is smaller than the outer diameter of the gas transmission pipeline by 0.8-1 mm.
Compared with the prior art, the utility model, following beneficial effect has:
1. the utility model provides an energy-concerving and environment-protective hot air system has realized the recovery of blast furnace tail gas waste heat, and the heat energy of recovery is used for preheating of heat accumulation formula hot-blast furnace air inlet, and is energy-concerving and environment-protective.
2. The blast furnace gas after dust removal is directly introduced into the heat accumulating type hot blast stove for recycling, so that the trouble of blast furnace gas storage is reduced.
3. The utility model provides an energy-concerving and environment-protective hot air system, wherein the gas transmission pipeline is nonrust steel pipe to the coating has the polytetrafluoroethylene layer at nonrust steel pipe inner wall, can make the difficult emergence of pipeline block up, and the safety in utilization is high.
Drawings
Fig. 1 is a schematic structural diagram of an energy-saving and environment-friendly hot air system provided by an embodiment of the present invention;
fig. 2 is a schematic perspective view of a heat collecting chamber in an energy-saving and environment-friendly hot air system provided by an embodiment of the present invention;
fig. 3 is a schematic view of a partial structure of a heat collecting chamber in an energy-saving and environment-friendly hot air system according to an embodiment of the present invention.
In the figure, 11 is a gravity dust collector, 12 is a bag-type dust collector, 13 is a dehydrator, 2 is a gas pipeline, 3 is a heat collection chamber, 31 is a ventilation door, 32 is a control panel, 33 is a sealing ring, 41 is a main machine of an air energy water heater, 42 is a heat preservation water tank of the air energy water heater, 5 is a heat storage type hot blast stove, 51 is a gas inlet pipe, 52 is a cold air inlet pipe, 53 is a hot air outlet pipe, 54 is a heat storage brick, 6 is a blower, and 7 is a preheating pipe.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
As shown in fig. 1, the utility model provides an energy-saving and environment-friendly hot air system, which is characterized in that the system comprises a dust removing system, a heat collecting chamber 3 of a main machine 41 with a built-in gas pipeline 2 and an air energy water heater, a heat preservation water tank 42 of the air energy water heater with a built-in preheating pipe 7, a blower 6 connected with one end of the preheating pipe 7, and a heat accumulating hot air furnace 5 provided with a gas inlet pipe 51, a cold air inlet pipe 52 and a hot air outlet pipe 53 which are communicated in sequence;
the dust removal system comprises a gravity dust remover 11, a bag-type dust remover 12 and a dehydrator 13 which are communicated in sequence;
one end of the gas transmission pipeline 2 is communicated with an outlet of the dehydrator 13, the other end of the gas transmission pipeline extends out of the heat collection chamber 3 and then is communicated with the gas inlet pipe 51, the main machine 41 of the air energy water heater is connected with the heat preservation water tank 42 of the air energy water heater, the cold air inlet pipe 52 is communicated with the other end of the preheating pipe 7, and the hot air outlet pipe 53 is connected with the blast furnace.
As shown in fig. 1, in the present invention, preferably, the gas down pipe of the gravity dust collector 11 is communicated with the gas discharge port of the blast furnace, and the gas outlet is connected with the gas inlet of the bag-type dust collector 12; the exhaust port of the bag-type dust collector 12 is connected with the dehydrator 13.
As shown in fig. 1, in order to increase the heat dissipation area, in the present invention, the gas transmission pipeline 2 is spirally disposed on the inner wall of the heat collection chamber 3.
The utility model discloses in, the gas transmission pipeline is nonrust steel pipe, the coating of nonrust steel pipe inner wall has the polytetrafluoroethylene layer.
In the utility model, the outlet of the dehydrator and the gas pipeline between the heat collecting chambers are coated with polyurethane layers.
As shown in FIG. 1, in the present invention, the preheating pipe is a serpentine finned pipe.
The utility model discloses in, the inner wall of thermal-arrest room is provided with the heat preservation.
As shown in fig. 2, in the present invention, a plurality of ventilation doors are disposed on the top of the heat collecting chamber.
As shown in fig. 1, in the utility model discloses in, be provided with the combustor in the heat accumulation formula hot-blast furnace, with the combustor that the combustor links to each other and the regenerator that has piled up the heat accumulation brick, the combustor is provided with gas inlet pipe, the combustor pass through heat transfer mechanism with the regenerator links to each other.
As shown in fig. 1, in order to facilitate stacking, the top surface and the bottom surface of the thermal storage brick are wave structures.
As shown in fig. 3, the utility model discloses in, be provided with on the heat collection chamber and be used for wearing to establish the connecting hole of gas transmission pipeline, the inner wall of connecting hole is provided with the sealing ring, the sealing ring orientation the terminal surface outside the connecting hole is provided with the orientation the inclined plane of connecting downthehole slope, the inclined plane is 30 with the contained angle of vertical face, the internal diameter of sealing ring is less than gas transmission pipeline external diameter 0.8 ~ 1 mm. The utility model discloses in, the inclined plane that sealing ring 33 set up has the guide effect, the gas transmission pipeline 2 of being convenient for wear to establish. Meanwhile, the inner diameter of the sealing ring 33 is smaller than the outer diameter of the gas transmission pipeline 2 by 0.8-1 mm, so that the sealing ring and the gas transmission pipeline are in moderate interference fit, and the sealing effect is improved.
As shown in fig. 2, the utility model discloses in, heat collection chamber 3 is a confined insulation construction, becomes the heliciform setting after gas transmission pipeline 2 gets into heat collection chamber 3, can increase heat radiating area, and gas transmission pipeline 2 passes through the heat exchange effect and transmits heat energy for the air, then is by the heat accumulation of air energy water heater. The ventilation door 31 at the top of the heat collecting chamber 3 is used to achieve ventilation and air exchange of various degrees when the temperature inside the heat collecting chamber 3 is too high or in case of gas leakage.
The utility model discloses in, gas transmission pipeline 2 covers the polytetrafluoroethylene layer by covering in the better nonrust steel pipe of heat conductivility and forms, covers the polytetrafluoroethylene layer and has high temperature resistant, corrosion-resistant advantage, and impurity is difficult for the adhesion at its surface, consequently is difficult for forming the jam, further reduces gas transmission pipeline 2 from this and takes place the probability of jam. The air pipe 2 is coated with a polyurethane layer on the outer surface of a section before entering the heat collection chamber 3, so as to prevent the loss of heat energy.
As shown in fig. 2, which shows a preferred construction of the heat collection chamber 3 described above. A temperature sensor and a gas leakage alarm can be arranged in the heat collection chamber 3; the control panel 32 is arranged outside the heat collection chamber 3, and the temperature sensor and the gas leakage alarm are electrically connected with the control panel 32 to display the temperature in the heat collection chamber 3 and whether the gas leaks. From this aspect the operator knows the conditions inside the heat collection chamber 3 and thus determines whether it is necessary to open the ventilation door 31 or other emergency measures.
The utility model provides an above-mentioned energy-concerving and environment-protective hot-air system's working process as follows:
the dust removal system removes dust from the blast furnace tail gas to obtain clean gas with certain heat energy, the gas passes through the heat collection chamber 3, the heat energy is transferred to the air energy water heater, and the heat energy is stored in water in the heat preservation water tank 42 of the air energy water heater; then the hot air enters a heat accumulating type hot air furnace 5 to be supplied to a burner to work; meanwhile, cold air discharged by the air blower 6 is preheated in the heat preservation water tank 42 of the air energy water heater through the heat conduction effect and then is introduced into the heat storage type hot blast stove 5 for heating, so that the recycling of heat energy is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An energy-saving and environment-friendly hot air system is characterized by comprising a dust removal system, a heat collection chamber of a host machine with a built-in gas transmission pipeline and an air energy water heater, a heat preservation water tank of the air energy water heater with a built-in preheating pipe, a blower connected with one end of the preheating pipe and a heat accumulating type hot air furnace with a gas inlet pipe, a cold air inlet pipe and a hot air outlet pipe which are sequentially communicated;
the dust removal system comprises a gravity dust remover, a bag-type dust remover and a dehydrator which are communicated in sequence;
one end of the gas transmission pipeline is communicated with an outlet of the dehydrator, the other end of the gas transmission pipeline extends out of the heat collection chamber and then is communicated with the gas inlet pipe, a main machine of the air energy water heater is connected with a heat preservation water tank of the air energy water heater, the cold air inlet pipe is communicated with the other end of the preheating pipe, and the hot air outlet pipe is connected with the blast furnace.
2. The energy-saving and environment-friendly hot air system as claimed in claim 1, wherein the air delivery pipeline is spirally arranged on the inner wall of the heat collection chamber.
3. The energy-saving environment-friendly hot air system as claimed in claim 1, wherein the air transmission pipeline is a stainless steel pipe, and the inner wall of the stainless steel pipe is coated with a polytetrafluoroethylene layer.
4. The energy-saving and environment-friendly hot air system as claimed in claim 1, wherein a polyurethane layer is coated outside the air transmission pipeline between the outlet of the dehydrator and the heat collection chamber.
5. The energy-saving and environment-friendly hot air system according to claim 1, wherein the preheating pipe is a serpentine finned pipe.
6. The energy saving and environment friendly hot air system according to claim 1, wherein the inner wall of the heat collecting chamber is provided with an insulating layer.
7. The energy-saving and environment-friendly hot air system according to claim 1, wherein a plurality of ventilation doors are arranged at the top of the heat collecting chamber.
8. The energy-saving and environment-friendly hot air system according to claim 1, wherein a burner, a combustion chamber connected with the burner and a regenerator stacked with regenerative bricks are arranged in the regenerative hot air furnace, the burner is provided with a gas inlet pipe, and the combustion chamber is connected with the regenerator through a heat transfer mechanism.
9. The energy saving and environment friendly hot air system according to claim 8, wherein the top and bottom surfaces of the heat accumulating bricks are of a wave structure.
10. The energy-saving and environment-friendly hot air system as claimed in any one of claims 1 to 8, wherein a connecting hole for penetrating the gas transmission pipeline is formed in the heat collection chamber, a sealing ring is arranged on the inner wall of the connecting hole, an inclined surface which inclines towards the inside of the connecting hole is arranged on the end surface, facing the outside of the connecting hole, of the sealing ring, an included angle formed between the inclined surface and a vertical surface is 30 degrees, and the inner diameter of the sealing ring is smaller than the outer diameter of the gas transmission pipeline by 0.8-1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120390093.9U CN214781940U (en) | 2021-02-22 | 2021-02-22 | Energy-saving and environment-friendly hot air system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120390093.9U CN214781940U (en) | 2021-02-22 | 2021-02-22 | Energy-saving and environment-friendly hot air system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214781940U true CN214781940U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120390093.9U Active CN214781940U (en) | 2021-02-22 | 2021-02-22 | Energy-saving and environment-friendly hot air system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214781940U (en) |
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2021
- 2021-02-22 CN CN202120390093.9U patent/CN214781940U/en active Active
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